Abstract Using the outlier robust extreme learning machine (ORELM) method, discharge coefficient of side weirs placed on rectangular and trapezoidal canals was simulated for first time in this study. The parameters governing including Froude number (Fr), ratio weir length to main channel ( L/b ), flow depth at upstream width y 1 / b ) crest height W L/y wall slope parameter m were initially det...

Simple hydraulic structures, such as weirs, allow measuring flow discharge by using the upstream depth and a stage–discharge relationship. In this relationship, coefficient is introduced to correct all effects neglected in derivation (viscosity, surface tension, velocity head approach channel, turbulence, non-uniform profile, streamline curvature due weir contraction). paper, dimensional analys...

Weirs are simple control structures usually built across channels for water storage and measurementof flow rates. The main target of the present study is to numerically simulate experimentally thehydraulic performance circular crested normal weirs. For numerical simulation, commercialpackage ANSYS CFX utilized adopting tetrahedrons mesh with a maximum total number 1932301elements, while, experi...

Abstract Weirs are hydraulic obstructions constructed across an open-channel flow causing a rise in water which is useful to convert the channels upstream as well using these structures measuring device. There different types, and sharp-crested weir one of them. Local scour downstream most critical problems affecting their safety stability. Many studies conducted prevent facilities from collaps...

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